Meno: | Jakub
|
---|
Priezvisko: | Novák
|
---|
Názov: | Prevention of occurrence of dead units in self-organizing maps
|
---|
Vedúci: | doc. RNDr. Martin Takác, PhD.
|
---|
Rok: | 2018
|
---|
Kµúčové slová: | dead units, dead neurons, self-organization, self-organizing map, SOM, neural networks
|
---|
Abstrakt: | One of the problems of self-organizing maps is occurrence of so-called dead units, which
cause the map to not be fully utilized. A bad initialization of weights can cause some
neurons to have their weights far from any input data, rendering them useless, because
they will never win the competition and, most likely, will not be in close proximity of
winners neighborhood to be adapted by the neighborhood function.
In this thesis, we propose several modifications to self-organizing maps training
algorithm aimed at preventing the occurrence of dead units, along with exploring their
parameter space and how the parameter values influence the outcome.
|
---|